Hammer.



F. KUSS.

HAMMER.

APPLICATION FILED JUNE 18, 191B.

Patented Apr. 22,1919.

LUlW715W mart an sanrns ienrnnr orrron.

FRANK KUSS, 01? PHILADELPHIA, PENNSYLVANIA.

HAMMER.

Application filed June 18, 1918.

To all whom it may concern Be it known that I, FRANK Koss, a subject of the Emperor of Austria, (Czech,) residing at 3038 A street, Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented new and useful Improvements in Hammers, of which the following is a specification.

The invention relates to hammers, and

more particularly to hammers operated by foot power, and has for an object to provide a hammer for use inconnection with an anvil, and which can be readily operated by foot power to deliver a heavy blow to an object on the anvil. Among other features, the invention comprehends a hammer which is normally held in a raised position, and which when the foot is brought into play, will descend upon an object on the anvil and deliver a blow thereto, the hammer being brought back to initial raised position when the foot is removed from the lever.

Still further the invention comprehends various adjustments as to leverage and the like, to increase or decrease the force of the blow of the hammer, and the amount of energy necessary to actuate the hammer by means of the foot.

In the further disclosure of the invention, reference is to be had to the accompanying drawing, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a side elevation.

Fig.2 is a rear elevation.

Fig. 3 is a horizontal sectional view taken on the line 33 in Fig. 1.

Referring more particularly to the views, the numeral 10 indicates a base or floor, and the numeral 11 a support for an anvil 12, the support being preferably provided with a vertical slot 13, or being formed in the nature of two uprights spaced apart to provide the slot. A framework 14 formed of angle bars or the like is secured upon the base 10, and embodies a pair of front inclined uprights 15, and a pair of rear inclined uprights 16, with the front and rear uprights of each pair preferably made of a single piece of material, as shown. Bearings 17 are secured to the fiat top portions of the framework, 14:, and journaled in the bearings is a horizontal supporting shaft 17 a carrying a block 18, through which passes Specification of Letters Patent.

Patented Apr. 22, 11.919

Serial No. 240,594.

a hammer bar or handle 19 and which is secured in the block. The forward end of the hammer bar carries a hammer 20, and the rear end of the hammer bar has pivotal connection with a yoke 21, straddling the hammer bar, on which a plurality of adj ustable screws 22 are arranged with suitable thumb nuts 23, the lower ends of the screws having connection with contractile springs 24, having their lower ends secured to a cross-piece 25 of the framework 14. An operating lever 26 is provided and at its rear end is bifurcated to form arms 27 which are pivoted to the rear uprights 16, of the framework, the lever extending forwardly to pass through the slot 13, and at its free front end having a flat plate 28, which I will term the foot plate. A connecting link 29 having its upper portion bifurcated to form arms 30, is provided with a pin 31 at its lower end for connection with the operating lever 26, the pin being adapted to pass through one of a number of holes 32 in the operating lever, the upper bifurcated end of the link being connected by a pin 33 to the hammer arm or bar, which is adapted to pass through one of a series of openings 34: therein.

lVith the hammer described it Will be seen that when pressure of the foot is brought to bear upon the foot plate, the hammer will be swung downwardly against the action of the springs, due to the link connection between the lever and the hammer bar or arm, and the hammer will descend upon the anvil to strike the object placed thereon. It will be seen that the tension of the springs can be adjusted, as desired, by means of the screws and thumb nuts plO- vided, and in this way the force of the blow delivered and the movement of the hammer proper back to initial position can be adjusted. Further, it will be seen that by having the ends of the link connection between the foot lever and hammer bar, adjustable on both of said members, the leverage of the foot lever can be increased or decreased in order that the maximum blow of the hammer can be obtained with the least possible amount of pressure of the foot upon the foot plate, and which will of course vary in accordance with the strength the operator has in his foot.

It will be noted that the anvil 12 has a part thereof formed to provide a depending element 35 which closes the slot 13 at the upper end, together with the anvil, and it will be seen that when the lever 26 is re leased after being pressed down, the action of the springs 24:, returning the forward end of the lever into an upward position, will cause the lever to strike the element 35 which, acting as a stop limits the upward movement of the lever.

From the foregoing description it will be seen that the device described is of simple construction and consists of few parts that cannot readily get out of order.

I claim:

A device of the character described, comprising a framework, a bifurcated hammer bar mounted to swing on the framework, intermediate the ends of the hammer bar, a.

yoke formed by the bifurcated end of the hammer bar, said yoke being at the rear end of the bar and in the rear of the framework, contractile springs connected to the frame work, adjusting means on the ends of the yoke and connected to the springs for the adjustment of the latter, a foot lever mounted to swing on the framework and extending forwardly beneath the hammer bar and a link having adjustable connection with the hammer bar and with the foot lever, whereby connection between the link and the hammer bar and connection between the link and the foot lever can be changed independently.

In testimony whereof I affix my signature.

FRANK KUSS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

